This is the season for outdoor projects and many of those projects will involve working with pressure treated lumber.
It is important to remember that when working with pressure treated lumber that any metal items such as fasteners (nails, screws, bolts, nuts and washers), joist hangers, hinges straps, flashings, shields and post brackets that come in direct contact with the pressure treated lumber must be corrosion resistant.
Do not use items made from carbon-steel or aluminum with pressure treated lumber, they will corrode, in some cases in a matter of months.
The best material for any metals coming in contact with pressure treated lumber is type 304 or 316 stainless steel. However, hot dipped galvanized fasteners and connectors can be used in above grade situations. It is best not to use electroplated galvanized metals as items made in this manner usually have a thinner coating than hot dipped galvanized items.
Remodelers and contractors should remind their customers that patio furniture, light fixtures, barbeques and other items made of aluminum or carbon steel that come in contact with pressure treated lumber will have corrosion at the point where the items come in contact with the pressure treated lumber.
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